Home / 15,272.28-21,039.30-12,565.86

Finding the Fourth Proportional to 15,272.28, 21,039.30 and 12,565.86

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Solution

The fourth proportional to 15,272.28, 21,039.30 and 12,565.86 is: 17,310.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,272.28 : 21,039.30 = 12,565.86 : x
  2. Step 2: Convert to fraction form
    15,272.28/21,039.30 = 12,565.86/x
  3. Step 3: Cross multiply
    15,272.28x = 21,039.30 × 12,565.86
  4. Step 4: Simplify right side
    15,272.28x = 264,376,898.30
  5. Step 5: Solve for x
    x = 264,376,898.30/15,272.28
  6. Step 6: Final answer
    x = 17,310.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.